抑制双馈风电场次同步振荡的自适应阻尼控制器设计及硬件在环试验  

Adaptive Damping Controller Designing and HIL Testing for Mitigating SSO in DFIG-based Wind Farm

作　　者：赵伟 李浩志 李付强 张晶 潘艳 谢小荣[2] ZHAO Wei;LI Haozhi;LI Fuqiang;ZHANG Jing;PAN Yan;XIE Xiaorong(North China Branch of State Grid Corporation of China,Xicheng District,Beijing 100053,China;State Key Lab of Control&Simulation of Power Systems&Generation Equipment(Dept.of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China)

机构地区：[1]国家电网有限公司华北分部,北京市西城区100053 [2]电力系统及发电设备控制与仿真国家重点实验室(清华大学电机系),北京市海淀区100084

出　　处：《电网技术》2023年第10期4065-4072,共8页Power System Technology

基　　金：国家电网有限公司科技项目(SGNC0000FZJS2200145);国家自然科学基金项目(51925701);清华大学–丰田联合研究基金(20223930081)。

摘　　要：双馈风电场接入串补交流电网的次同步振荡频率取决于系统运行条件,如风速、风电机组数量和串补度等。振荡特性改变可能引起针对特定场景的抑制措施失效。为应对实际系统中的振荡频率时变,研制了一种自适应阻尼控制器。控制器辨识振荡频率并在线更新控制参数,然后产生振荡频率的电流参考信号,通过并联变流器注入到系统中,实现双馈风电场次同步振荡的自适应抑制。基于RTDS进行控制器硬件在环仿真验证了振荡抑制效果,结果表明,自适应阻尼控制器在不同工况下均能有效抑制振荡。The subsynchronous oscillation(SSO)frequency of a doubly-fed induction generator(DFIG)-based wind farms connected to the series compensated AC grid depends on the operating conditions of the system,such as the wind speed,the number of wind turbines and the series compensation level,etc.Any changes in the oscillation characteristics may result in the failure of the suppression measures in specific scenarios.To cope with the time-varying oscillation frequency in the actual system,an adaptive damping controller is developed,which identifies the oscillation frequency and updates the control parameters online.The controller generates a current reference signal of the oscillation frequency and injects the damping current into the system by a shunt converter to realize the adaptive suppression of the SSO.The mitigation performance is tested by the controller hardware-in-the-loop(CHIL)simulations based on the RTDS.The results confirm that the adaptive damping controller is able to effectively mitigate the SSO under various operating conditions.

关 键 词：自适应阻尼控制 双馈风电场 次同步振荡抑制 

分 类 号：TM721[电气工程—电力系统及自动化]